Bio-removal of Heavy Metalsusing Iron-oxidizing Bacteria: A Novel Approach in Environmental Biotechnology
| Author | Sareh Farahani | en |
| Author | Abbas Akhavan Sepahi | en |
| Author | Seyed Abbas Shojaosadati | en |
| Author | Farzaneh Hosseini | en |
| Issued Date | 2020-07-31 | en |
| Abstract | The pharmaceutical and hygienic productivity of wastewater containing pollutants, especially heavy metals such as nickel, andmercury are brought into the nature. Recently, bio-removal of heavy metals has attracted significant attention as an eco-friendly approach for the research departments of the pharmaceutical companies. In the current study, removal of heavy metals including mercury and nickel was assessed using isolatediron-oxidizing bacteria from different sources. To this end, bacterial populations were isolated from a variety of aquatic ecosystems; including Mahallat Pond, mountainous rivers, iron industry wastewater, and treated industrial wastewater. The bacteria were cultured and purified in iron-oxidizing media after which the removal of mercury and nickel was measured through culturing the isolated bacteria in 3 different media of Luria-Bertani, PHGII, and iron-oxidizing media containing the heavy metals (2 ppm). The results proved LB as a suitable medium for all the isolated bacteria in removing the heavy metals.It was shown that approximately 100% of the mercury was removed through the bacterial cultured in LB medium. The removal of nickel also reached its maximum of 30% by bacterial culture in LB medium. Then, the phylogenetic study according to 16S rDNA gene sequences showed thatthe isolated bacteria from iron industry wastewater was Bacillus velezensis CR-502 (T).In summary, this study demonstrated the impressive ability of these bacteria for mercury removal and theeffects of different mediaon the removal of mercury and nickel. | en |
| DOI | https://doi.org/10.22037/ijpr.2019.112474.13779 | en |
| Keyword | Heavy metals | en |
| Keyword | Nickel | en |
| Keyword | Mercury | en |
| Keyword | Iron-oxidizing bacteria | en |
| Keyword | Aquatic ecosystems | en |
| Keyword | Bacillus sp | en |
| Publisher | Brieflands | en |
| Title | Bio-removal of Heavy Metalsusing Iron-oxidizing Bacteria: A Novel Approach in Environmental Biotechnology | en |
| Type | Original Article | en |
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